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-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser.ini24
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js98
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_blob.js118
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_delayedbutton.js96
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_dialog_layout.js103
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_extension.js58
-rw-r--r--toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_policy.js68
-rw-r--r--toolkit/mozapps/downloads/tests/browser/example.jnlp0
-rw-r--r--toolkit/mozapps/downloads/tests/browser/example.jnlp^headers^1
-rw-r--r--toolkit/mozapps/downloads/tests/browser/head.js17
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE0
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE^headers^1
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif1
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif^headers^1
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt1
-rw-r--r--toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt^headers^2
16 files changed, 589 insertions, 0 deletions
diff --git a/toolkit/mozapps/downloads/tests/browser/browser.ini b/toolkit/mozapps/downloads/tests/browser/browser.ini
new file mode 100644
index 0000000000..da1cf956e0
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser.ini
@@ -0,0 +1,24 @@
+[DEFAULT]
+support-files =
+ unknownContentType_dialog_layout_data.pif
+ unknownContentType_dialog_layout_data.pif^headers^
+ unknownContentType_dialog_layout_data.txt
+ unknownContentType_dialog_layout_data.txt^headers^
+ head.js
+
+[browser_save_wrongextension.js]
+[browser_unknownContentType_blob.js]
+[browser_unknownContentType_delayedbutton.js]
+skip-if =
+ os == "linux" && bits == 64 && debug # Bug 1747285
+ os == "linux" && fission && tsan # Bug 1747285
+[browser_unknownContentType_dialog_layout.js]
+[browser_unknownContentType_extension.js]
+support-files =
+ unknownContentType.EXE
+ unknownContentType.EXE^headers^
+[browser_unknownContentType_policy.js]
+skip-if = os != 'win' # jnlp file are not considered executable on macOS or Linux
+support-files =
+ example.jnlp
+ example.jnlp^headers^
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js b/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js
new file mode 100644
index 0000000000..ba1b6cde5c
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js
@@ -0,0 +1,98 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+let url =
+ "data:text/html,<a id='link' href='http://localhost:8000/thefile.js'>Link</a>";
+
+let MockFilePicker = SpecialPowers.MockFilePicker;
+MockFilePicker.init(window);
+
+let httpServer = null;
+
+add_task(async function test() {
+ const { HttpServer } = ChromeUtils.import(
+ "resource://testing-common/httpd.js"
+ );
+
+ httpServer = new HttpServer();
+ httpServer.start(8000);
+
+ function handleRequest(aRequest, aResponse) {
+ aResponse.setStatusLine(aRequest.httpVersion, 200);
+ aResponse.setHeader("Content-Type", "text/plain");
+ aResponse.write("Some Text");
+ }
+ httpServer.registerPathHandler("/thefile.js", handleRequest);
+
+ let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+
+ let popupShownPromise = BrowserTestUtils.waitForEvent(document, "popupshown");
+
+ await BrowserTestUtils.synthesizeMouseAtCenter(
+ "#link",
+ { type: "contextmenu", button: 2 },
+ gBrowser.selectedBrowser
+ );
+ await popupShownPromise;
+
+ let tempDir = createTemporarySaveDirectory();
+ let destFile;
+
+ MockFilePicker.displayDirectory = tempDir;
+ MockFilePicker.showCallback = fp => {
+ let fileName = fp.defaultString;
+ destFile = tempDir.clone();
+ destFile.append(fileName);
+
+ MockFilePicker.setFiles([destFile]);
+ MockFilePicker.filterIndex = 1; // kSaveAsType_URL
+ };
+
+ let transferCompletePromise = new Promise(resolve => {
+ mockTransferCallback = resolve;
+ mockTransferRegisterer.register();
+ });
+
+ registerCleanupFunction(function () {
+ mockTransferRegisterer.unregister();
+ tempDir.remove(true);
+ });
+
+ document.getElementById("context-savelink").doCommand();
+
+ let contextMenu = document.getElementById("contentAreaContextMenu");
+ let popupHiddenPromise = BrowserTestUtils.waitForEvent(
+ document,
+ "popuphidden"
+ );
+ contextMenu.hidePopup();
+ await popupHiddenPromise;
+
+ await transferCompletePromise;
+
+ is(destFile.leafName, "thefile.js", "filename extension is not modified");
+
+ BrowserTestUtils.removeTab(tab);
+});
+
+add_task(async () => {
+ MockFilePicker.cleanup();
+ await new Promise(resolve => httpServer.stop(resolve));
+});
+
+Services.scriptloader.loadSubScript(
+ "chrome://mochitests/content/browser/toolkit/content/tests/browser/common/mockTransfer.js",
+ this
+);
+
+function createTemporarySaveDirectory() {
+ let saveDir = Services.dirsvc.get("TmpD", Ci.nsIFile);
+ saveDir.append("testsavedir");
+ if (!saveDir.exists()) {
+ saveDir.create(Ci.nsIFile.DIRECTORY_TYPE, 0o755);
+ }
+ return saveDir;
+}
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_blob.js b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_blob.js
new file mode 100644
index 0000000000..7b3900f46f
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_blob.js
@@ -0,0 +1,118 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const UCT_URI = "chrome://mozapps/content/downloads/unknownContentType.xhtml";
+
+async function promiseDownloadFinished(list) {
+ return new Promise(resolve => {
+ list.addView({
+ onDownloadChanged(download) {
+ info("Download changed!");
+ if (download.succeeded || download.error) {
+ info("Download succeeded or errored");
+ list.removeView(this);
+ resolve(download);
+ }
+ },
+ });
+ });
+}
+
+/**
+ * Check that both in the download "what do you want to do with this file"
+ * dialog and in the about:downloads download list, we represent blob URL
+ * download sources using the principal (origin) that generated the blob.
+ */
+add_task(async function test_check_blob_origin_representation() {
+ forcePromptForFiles("text/plain", "txt");
+
+ await check_blob_origin(
+ "https://example.org/1",
+ "example.org",
+ "example.org"
+ );
+ await check_blob_origin(
+ "data:text/html,<body>Some Text<br>",
+ "(data)",
+ "blob"
+ );
+});
+
+async function check_blob_origin(pageURL, expectedSource, expectedListOrigin) {
+ await BrowserTestUtils.withNewTab(pageURL, async browser => {
+ // Ensure we wait for the download to finish:
+ let downloadList = await Downloads.getList(Downloads.PUBLIC);
+ let downloadPromise = promiseDownloadFinished(downloadList);
+
+ // Wait for the download prompting dialog
+ let dialogPromise = BrowserTestUtils.domWindowOpenedAndLoaded(
+ null,
+ win => win.document.documentURI == UCT_URI
+ );
+
+ // create and click an <a download> link to a txt file.
+ await SpecialPowers.spawn(browser, [], () => {
+ // Use `eval` to get a blob URL scoped to content, so that content is
+ // actually allowed to open it and so we can check the origin is correct.
+ let url = content.eval(`
+ window.foo = new Blob(["Hello"], {type: "text/plain"});
+ URL.createObjectURL(window.foo)`);
+ let link = content.document.createElement("a");
+ link.href = url;
+ link.textContent = "Click me, click me, me me me";
+ link.download = "my-file.txt";
+ content.document.body.append(link);
+ link.click();
+ });
+
+ // Check what we display in the dialog
+ let dialogWin = await dialogPromise;
+ let source = dialogWin.document.getElementById("source");
+ is(
+ source.value,
+ expectedSource,
+ "Should list origin as source if available."
+ );
+
+ // Close the dialog
+ let closedPromise = BrowserTestUtils.windowClosed(dialogWin);
+ // Ensure we're definitely saving (otherwise this depends on mime service
+ // defaults):
+ dialogWin.document.getElementById("save").click();
+ let dialogNode = dialogWin.document.querySelector("dialog");
+ dialogNode.getButton("accept").disabled = false;
+ dialogNode.acceptDialog();
+ await closedPromise;
+
+ // Wait for the download to finish and ensure it is cleared up.
+ let download = await downloadPromise;
+ registerCleanupFunction(async () => {
+ let target = download.target.path;
+ await download.finalize();
+ await IOUtils.remove(target);
+ });
+
+ // Check that the same download is displayed correctly in about:downloads.
+ await BrowserTestUtils.withNewTab("about:downloads", async dlBrowser => {
+ let doc = dlBrowser.contentDocument;
+ let listNode = doc.getElementById("downloadsListBox");
+ await BrowserTestUtils.waitForMutationCondition(
+ listNode,
+ { childList: true, subtree: true, attributeFilter: ["value"] },
+ () =>
+ listNode.firstElementChild
+ ?.querySelector(".downloadDetailsNormal")
+ ?.getAttribute("value")
+ );
+ let download = listNode.firstElementChild;
+ let detailString = download.querySelector(".downloadDetailsNormal").value;
+ Assert.stringContains(
+ detailString,
+ expectedListOrigin,
+ "Should list origin in download list if available."
+ );
+ });
+ });
+}
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_delayedbutton.js b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_delayedbutton.js
new file mode 100644
index 0000000000..426a740cd7
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_delayedbutton.js
@@ -0,0 +1,96 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const UCT_URI = "chrome://mozapps/content/downloads/unknownContentType.xhtml";
+const LOAD_URI =
+ "http://mochi.test:8888/browser/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt";
+
+const DIALOG_DELAY =
+ Services.prefs.getIntPref("security.dialog_enable_delay") + 200;
+
+let UCTObserver = {
+ opened: PromiseUtils.defer(),
+ closed: PromiseUtils.defer(),
+
+ observe(aSubject, aTopic, aData) {
+ let win = aSubject;
+
+ switch (aTopic) {
+ case "domwindowopened":
+ win.addEventListener(
+ "load",
+ function onLoad(event) {
+ // Let the dialog initialize
+ SimpleTest.executeSoon(function () {
+ UCTObserver.opened.resolve(win);
+ });
+ },
+ { once: true }
+ );
+ break;
+
+ case "domwindowclosed":
+ if (win.location == UCT_URI) {
+ this.closed.resolve();
+ }
+ break;
+ }
+ },
+};
+
+function waitDelay(delay) {
+ return new Promise((resolve, reject) => {
+ /* eslint-disable mozilla/no-arbitrary-setTimeout */
+ window.setTimeout(resolve, delay);
+ });
+}
+
+add_task(async function test_unknownContentType_delayedbutton() {
+ info("Starting browser_unknownContentType_delayedbutton.js...");
+ forcePromptForFiles("text/plain", "txt");
+
+ Services.ww.registerNotification(UCTObserver);
+
+ await BrowserTestUtils.withNewTab(
+ {
+ gBrowser,
+ url: LOAD_URI,
+ waitForLoad: false,
+ waitForStateStop: true,
+ },
+ async function () {
+ let uctWindow = await UCTObserver.opened.promise;
+ let dialog = uctWindow.document.getElementById("unknownContentType");
+ let ok = dialog.getButton("accept");
+
+ SimpleTest.is(ok.disabled, true, "button started disabled");
+
+ await waitDelay(DIALOG_DELAY);
+
+ SimpleTest.is(ok.disabled, false, "button was enabled");
+
+ let focusOutOfDialog = SimpleTest.promiseFocus(window);
+ window.focus();
+ await focusOutOfDialog;
+
+ SimpleTest.is(ok.disabled, true, "button was disabled");
+
+ let focusOnDialog = SimpleTest.promiseFocus(uctWindow);
+ uctWindow.focus();
+ await focusOnDialog;
+
+ SimpleTest.is(ok.disabled, true, "button remained disabled");
+
+ await waitDelay(DIALOG_DELAY);
+ SimpleTest.is(ok.disabled, false, "button re-enabled after delay");
+
+ dialog.cancelDialog();
+ await UCTObserver.closed.promise;
+
+ Services.ww.unregisterNotification(UCTObserver);
+ uctWindow = null;
+ UCTObserver = null;
+ }
+ );
+});
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_dialog_layout.js b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_dialog_layout.js
new file mode 100644
index 0000000000..577e341f90
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_dialog_layout.js
@@ -0,0 +1,103 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * The unknownContentType popup can have two different layouts depending on
+ * whether a helper application can be selected or not.
+ * This tests that both layouts have correct collapsed elements.
+ */
+
+const UCT_URI = "chrome://mozapps/content/downloads/unknownContentType.xhtml";
+
+let tests = [
+ {
+ // This URL will trigger the simple UI, where only the Save an Cancel buttons are available
+ url: "http://mochi.test:8888/browser/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif",
+ elements: {
+ basicBox: { collapsed: false },
+ normalBox: { collapsed: true },
+ },
+ },
+ {
+ // This URL will trigger the full UI
+ url: "http://mochi.test:8888/browser/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt",
+ elements: {
+ basicBox: { collapsed: true },
+ normalBox: { collapsed: false },
+ },
+ },
+];
+
+add_task(async function test_unknownContentType_dialog_layout() {
+ forcePromptForFiles("text/plain", "txt");
+ forcePromptForFiles("application/octet-stream", "pif");
+
+ for (let test of tests) {
+ let UCTObserver = {
+ opened: PromiseUtils.defer(),
+ closed: PromiseUtils.defer(),
+
+ observe(aSubject, aTopic, aData) {
+ let win = aSubject;
+
+ switch (aTopic) {
+ case "domwindowopened":
+ win.addEventListener(
+ "load",
+ function onLoad(event) {
+ // Let the dialog initialize
+ SimpleTest.executeSoon(function () {
+ UCTObserver.opened.resolve(win);
+ });
+ },
+ { once: true }
+ );
+ break;
+
+ case "domwindowclosed":
+ if (win.location == UCT_URI) {
+ this.closed.resolve();
+ }
+ break;
+ }
+ },
+ };
+
+ Services.ww.registerNotification(UCTObserver);
+ await BrowserTestUtils.withNewTab(
+ {
+ gBrowser,
+ url: test.url,
+ waitForLoad: false,
+ waitForStateStop: true,
+ },
+ async function () {
+ let uctWindow = await UCTObserver.opened.promise;
+
+ for (let [id, props] of Object.entries(test.elements)) {
+ let elem = uctWindow.dialog.dialogElement(id);
+ for (let [prop, value] of Object.entries(props)) {
+ SimpleTest.is(
+ elem[prop],
+ value,
+ "Element with id " +
+ id +
+ " has property " +
+ prop +
+ " set to " +
+ value
+ );
+ }
+ }
+ let focusOnDialog = SimpleTest.promiseFocus(uctWindow);
+ uctWindow.focus();
+ await focusOnDialog;
+
+ uctWindow.document.getElementById("unknownContentType").cancelDialog();
+ uctWindow = null;
+ Services.ww.unregisterNotification(UCTObserver);
+ }
+ );
+ }
+});
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_extension.js b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_extension.js
new file mode 100644
index 0000000000..1bb836c1d8
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_extension.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+ "chrome://mochitests/content",
+ "http://example.com"
+);
+
+/**
+ * Check that case-sensitivity doesn't cause us to duplicate
+ * file name extensions.
+ */
+add_task(async function test_download_filename_extension() {
+ forcePromptForFiles("application/octet-stream", "exe");
+ let windowObserver = BrowserTestUtils.domWindowOpenedAndLoaded();
+
+ let tab = await BrowserTestUtils.openNewForegroundTab({
+ gBrowser,
+ opening: TEST_PATH + "unknownContentType.EXE",
+ waitForLoad: false,
+ });
+ let win = await windowObserver;
+
+ let list = await Downloads.getList(Downloads.ALL);
+ let downloadFinishedPromise = new Promise(resolve => {
+ list.addView({
+ onDownloadChanged(download) {
+ if (download.stopped) {
+ list.removeView(this);
+ resolve(download);
+ }
+ },
+ });
+ });
+
+ let dialog = win.document.querySelector("dialog");
+ dialog.getButton("accept").removeAttribute("disabled");
+ dialog.acceptDialog();
+ let download = await downloadFinishedPromise;
+ // We cannot assume that the filename didn't change.
+ let filename = PathUtils.filename(download.target.path);
+ Assert.ok(
+ filename.indexOf(".") == filename.lastIndexOf("."),
+ "Should not duplicate extension"
+ );
+ Assert.ok(filename.endsWith(".EXE"), "Should not change extension");
+ await list.remove(download);
+ BrowserTestUtils.removeTab(tab);
+ try {
+ await IOUtils.remove(download.target.path);
+ } catch (ex) {
+ // Ignore errors in removing the file, the system may keep it locked and
+ // it's not a critical issue.
+ info("Failed to remove the file " + ex);
+ }
+});
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_policy.js b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_policy.js
new file mode 100644
index 0000000000..ccb0d957bb
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/browser_unknownContentType_policy.js
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { EnterprisePolicyTesting } = ChromeUtils.importESModule(
+ "resource://testing-common/EnterprisePolicyTesting.sys.mjs"
+);
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+ "chrome://mochitests/content",
+ "http://example.com"
+);
+
+/**
+ * Check that policy allows certain extensions to be launched.
+ */
+add_task(async function test_download_jnlp_policy() {
+ forcePromptForFiles("application/x-java-jnlp-file", "jnlp");
+ let windowObserver = BrowserTestUtils.domWindowOpenedAndLoaded();
+
+ let tab = await BrowserTestUtils.openNewForegroundTab({
+ gBrowser,
+ opening: TEST_PATH + "example.jnlp",
+ waitForLoad: false,
+ });
+ let win = await windowObserver;
+
+ let dialog = win.document.querySelector("dialog");
+ let normalBox = win.document.getElementById("normalBox");
+ let basicBox = win.document.getElementById("basicBox");
+ is(normalBox.collapsed, !AppConstants.IS_ESR);
+ is(basicBox.collapsed, AppConstants.IS_ESR);
+ dialog.cancelDialog();
+ BrowserTestUtils.removeTab(tab);
+
+ await EnterprisePolicyTesting.setupPolicyEngineWithJson({
+ policies: {
+ ExemptDomainFileTypePairsFromFileTypeDownloadWarnings: [
+ {
+ file_extension: "jnlp",
+ domains: ["example.com"],
+ },
+ ],
+ },
+ });
+
+ windowObserver = BrowserTestUtils.domWindowOpenedAndLoaded();
+
+ tab = await BrowserTestUtils.openNewForegroundTab({
+ gBrowser,
+ opening: TEST_PATH + "example.jnlp",
+ waitForLoad: false,
+ });
+ win = await windowObserver;
+
+ dialog = win.document.querySelector("dialog");
+ normalBox = win.document.getElementById("normalBox");
+ basicBox = win.document.getElementById("basicBox");
+ is(normalBox.collapsed, false);
+ is(basicBox.collapsed, true);
+ dialog.cancelDialog();
+ BrowserTestUtils.removeTab(tab);
+
+ await EnterprisePolicyTesting.setupPolicyEngineWithJson({
+ policies: {},
+ });
+});
diff --git a/toolkit/mozapps/downloads/tests/browser/example.jnlp b/toolkit/mozapps/downloads/tests/browser/example.jnlp
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/example.jnlp
diff --git a/toolkit/mozapps/downloads/tests/browser/example.jnlp^headers^ b/toolkit/mozapps/downloads/tests/browser/example.jnlp^headers^
new file mode 100644
index 0000000000..fac0de2095
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/example.jnlp^headers^
@@ -0,0 +1 @@
+Content-Type: application/x-java-jnlp-file
diff --git a/toolkit/mozapps/downloads/tests/browser/head.js b/toolkit/mozapps/downloads/tests/browser/head.js
new file mode 100644
index 0000000000..a5536e95b2
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/head.js
@@ -0,0 +1,17 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+function forcePromptForFiles(mime, extension) {
+ const handlerSvc = Cc["@mozilla.org/uriloader/handler-service;1"].getService(
+ Ci.nsIHandlerService
+ );
+ const mimeSvc = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
+
+ let txtHandlerInfo = mimeSvc.getFromTypeAndExtension(mime, extension);
+ txtHandlerInfo.preferredAction = Ci.nsIHandlerInfo.alwaysAsk;
+ txtHandlerInfo.alwaysAskBeforeHandling = true;
+ handlerSvc.store(txtHandlerInfo);
+ registerCleanupFunction(() => handlerSvc.remove(txtHandlerInfo));
+}
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE b/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE^headers^ b/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE^headers^
new file mode 100644
index 0000000000..09b22facc0
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType.EXE^headers^
@@ -0,0 +1 @@
+Content-Type: application/octet-stream
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif
new file mode 100644
index 0000000000..9353d13126
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif
@@ -0,0 +1 @@
+Dummy content for unknownContentType_dialog_layout_data.pif
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif^headers^ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif^headers^
new file mode 100644
index 0000000000..09b22facc0
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.pif^headers^
@@ -0,0 +1 @@
+Content-Type: application/octet-stream
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt
new file mode 100644
index 0000000000..77e7195596
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt
@@ -0,0 +1 @@
+Dummy content for unknownContentType_dialog_layout_data.txt
diff --git a/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt^headers^ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt^headers^
new file mode 100644
index 0000000000..2a3c472e26
--- /dev/null
+++ b/toolkit/mozapps/downloads/tests/browser/unknownContentType_dialog_layout_data.txt^headers^
@@ -0,0 +1,2 @@
+Content-Type: text/plain
+Content-Disposition: attachment